Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 3.19 147/177] IB/iser: Fix wrong calculation of protection buffer length | Date | Sat, 2 May 2015 21:02:49 +0200 |
| |
3.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sagi Grimberg <sagig@mellanox.com>
commit a065fe6aa25ba6ba93c02dc13486131bb3c64d5f upstream.
This length miss-calculation may cause a silent data corruption in the DIX case and cause the device to reference unmapped area.
Fixes: d77e65350f2d ('libiscsi, iser: Adjust data_length to include protection information') Signed-off-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/infiniband/ulp/iser/iser_initiator.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/infiniband/ulp/iser/iser_initiator.c +++ b/drivers/infiniband/ulp/iser/iser_initiator.c @@ -409,8 +409,8 @@ int iser_send_command(struct iscsi_conn if (scsi_prot_sg_count(sc)) { prot_buf->buf = scsi_prot_sglist(sc); prot_buf->size = scsi_prot_sg_count(sc); - prot_buf->data_len = data_buf->data_len >> - ilog2(sc->device->sector_size) * 8; + prot_buf->data_len = (data_buf->data_len >> + ilog2(sc->device->sector_size)) * 8; } if (hdr->flags & ISCSI_FLAG_CMD_READ) {
| |